In the fantastically successful movie, "The Empire Strikes Back," the viewers are invited to continue their involvement in the adventures of the heroes and villains of the first movie, "Star Wars." Once again we find ourselves engaged with Luke Skywalker, Han Solo, Chewbacca, Princess Leia, and the robots Artoo Detoo and See Threepio as they battle Darth Vader and the Dark Empire legions. One of the most fascinating new characters of "The Empire Strikes Back" is a strange little fellow named Yoda, who lives on the slimy planet Dagobah. Yoda looks like a medieval gargoyle and is the master teacher of the Jedi knights, the universal agents of good and righteousness. Luke Skywalker is sent to Yoda for training as a Jedi knight, but their confrontation is not altogether altruistic. When Yoda t…